using System;

using System.Linq;

using Newtonsoft.Json.Linq;

public class Program

{

    public static void Main()

    {

        string json = @"

            {

              ""GrowthRates"": [

                {

                  ""FinancialStatementHeader"": {

                    ""TimePeriodText"": {

                      ""attrCodeValue"": 11096,

                      ""txt"": ""Between 0 and 12 months""

                    }

                  },

                  ""ComparedToFinancialStatementHeader"": {

                    ""TimePeriodText"": {

                      ""attrCodeValue"": 13711,

                      ""txt"": ""1-3 years""

                    }

                  },

                  ""GrowthRateItem"": [

                    {

                      ""ItemDescriptionText"": {

                        ""attrCodeValue"": 6240,

                        ""txt"": ""Total number of employees""

                      },

                      ""ItemRate"": 10

                    },

                    {

                      ""ItemDescriptionText"": {

                        ""attrCodeValue"": 3110,

                        ""txt"": ""Sales Revenue""

                      },

                      ""ItemRate"": 20

                    }

                  ]

                },

                {

                  ""FinancialStatementHeader"": {

                    ""TimePeriodText"": {

                      ""attrCodeValue"": 11096,

                      ""txt"": ""Between 0 and 12 months""

                    }

                  },

                  ""ComparedToFinancialStatementHeader"": {

                    ""TimePeriodText"": {

                      ""attrCodeValue"": 13721,

                      ""txt"": ""1-5 years""

                    }

                  },

                  ""GrowthRateItem"": [

                    {

                      ""ItemDescriptionText"": {

                        ""attrCodeValue"": 6240,

                        ""txt"": ""Total number of employees""

                      },

                      ""ItemRate"": 30

                    },

                    {

                      ""ItemDescriptionText"": {

                        ""attrCodeValue"": 3110,

                        ""txt"": ""Sales Revenue""

                      },

                      ""ItemRate"": 40

                    }

                  ]

                }

              ]

            }";

​

        JObject obj = JObject.Parse(json);

        PrintItemRate(obj, "1-3 years", "Sales Revenue");

        PrintItemRate(obj, "1-5 years", "Sales Revenue");

        PrintItemRate(obj, "1-3 years", "Total number of employees");

        PrintItemRate(obj, "1-5 years", "Total number of employees");

    }

​

    public static void PrintItemRate(JObject obj, string timePeriodText, string itemDescriptionText)

    {

        string rate = GetItemRate(obj, timePeriodText, itemDescriptionText);

        Console.WriteLine(itemDescriptionText + ", " + timePeriodText + ": " + rate);

    }

​

    public static string GetItemRate(JObject obj, string timePeriodText, string itemDescriptionText)

    {

        return obj.SelectToken("GrowthRates")

            .First(jo => (string)jo.SelectToken("ComparedToFinancialStatementHeader.TimePeriodText.txt") == timePeriodText)

            .SelectToken("GrowthRateItem")

            .First(jo => (string)jo.SelectToken("ItemDescriptionText.txt") == itemDescriptionText)

            .SelectToken("ItemRate")

            .Value<string>();

    }

}